Practice Questions

Q48.Amongst the following compounds, which one is an antacid? (1) Ranitidine (2) Meprobamate (3) Terfenadine (4) Brompheniramine

Q48.For lead storage battery pick the correct statements A. During charging of battery, PbSO4 on anode is converted into PbO2 B. During charging of battery, PbSO4 on cathode is converted into PbO2 C. Lead storage battery consists of grid of lead packed with PbO2 as anode D. Lead storage battery has ~38% solution of sulphuric acid as an electrolyte Choose the correct answer from the options given below: (1) A, B, D only (2) B, C, D only (3) B, C only (4) B, D only

Q48. In the above conversion the correct sequence of reagents to be added is (1) (i) KMnO4, (ii) Br2 / Fe, (iii) Fe /H+, (iv) Cl2(2) (i) Br2 / Fe, (ii) Fe /H+, (iii) KMnO4, (iv) Cl2 (3) (i) Fe /H+, (ii) HONO, (iii) CuCl, (iv) KMnO4(4) (i)(v)Br2Br2/ Fe, (ii) Fe /H+, (iii) HONO, (iv) CuCl (v) KM

Q48.For a chemical reaction A + B → Product, the order is 1 with respect to A and B. Rate [A] [B] mol L−1 S−1 mol L−1 mol L−1 0. 10 20 0. 5 0. 40 x 0. 5 0. 80 40 y What is the value of x and y? (1) 160 and 4 (2) 80 and 4 (3) 80 and 2 (4) 40 and 4 JEE Main 2023 (11 Apr Shift 2) JEE Main Previous Year Paper

Q48.In the reaction given below The product ‘X’ is : (1) (2) (3) (4)

Q48.The major component of which of the following ore is sulphide based mineral? (1) Calamine (2) Siderite (3) Sphalerite (4) Malachite

Q48. Compound P is neutral, Q gives effervescence with NaHCO3 while R reacts with Hinsberg’s reagent to give solid soluble in NaOH . Compound P is (1) (2) (3) (4)

Q48.Isomeric amines with molecular formula C8H11N give the following tests IsomerP ⇒ Can be prepared by Gabriel phthalimide synthesis IsomerQ ⇒ Reacts with Hinsberg’s reagent to give solid insoluble in NaOH IsomerR ⇒ Reacts with HONO followed by β-naphthol in NaOH to give red dye. IsomersP, Q and R respectively are JEE Main 2023 (10 Apr Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q48.Match List I with List II List II List II (A) Tranquilizers (I) Anti blood clotting (B) Aspirin (II) Salvarsan (C) Antibiotic (III) Antidepressant drugs (D) Antiseptic (IV) Soframicine Choose the correct answer from the options given below: (1) (A)–IV, (B)–II, (C)–I, (D)–III (2) (A)–II, (B)–I, (C)–III, (D)–IV (3) (A)–III, (B)–I, (C)–II, (D)–IV (4) (A)–II, (B)–IV, (C)–I, (D)–III

Q48.Compound A reacts with NH4 Cl and forms a compound B. Compound B reacts with H2O and excess of CO2 to form compound C which on passing through or reaction with saturated NaCl solution forms sodium hydrogen carbonate. Compound A. B and C, are respectively. (1) CaCl2, NH3, NH4 HCO3 (2) CaCl2, NH+4 , (NH4)2 CO3 (3) Ca(OH)2, NH3, NH4 HCO3 (4) Ca(OH)2, NH+4 , (NH4)2 CO3

Q49.Match List I with List II: List I (Monomer) List II (Polymer) (A) Tetrafluoroethene (I) Orlon (B) Acrylonitrile (II) Natural rubber (C) Caprolactam (III) Teflon (D) Isoprene (IV) Nylon- 6 Choose the correct answer from the options given below: (1) (A) −(III), (B) −(I), (C) −(IV), (D) −(II) (2) (A) −(IV), (B) −(I), (C) −(II), (D) −(III) (3) (A) −(III), (B) −(IV), (C) −(II), (D) −(I) (4) (A) −(II), (B) −(III), (C) −(IV), (D) −(I)

Q49.What happens when a lyophilic sol is added to a lyophobic sol? (1) Film of lyophilic sol is formed over lyophobic (2) Lyophilic sol is dispersed in lyophobic sol sol (3) Film of lyophobic sol is formed over lyophilic (4) Lyophobic sol is coagulated sol

Q49.In the wet tests for detection of various cations by precipitation, Ba2 + cations are detected by obtaining precipitate of (1) Ba(ox) : Barium oxalate (2) BaCO3 (3) Ba ( OAc ) 2 (4) BaSO4

Q49.Consider the following reaction that goes from A to B in three steps as shown below: Choose the correct option Number of Rate Number of Activated determining Intermediates Complexes step (1) 2 3 I (2) 2 3 III (3) 2 3 II (4) 3 2 II (1) (1) (2) (2) (3) (3) (4) (4)

Q49.Which of the following artificial sweeteners has the highest sweetness value in comparison to cane sugar? (1) Aspartame (2) Sucralose (3) Alitame (4) Saccharin

Q49.In the wet tests for identification of various cations by precipitation, which transition element cation doesn't belong to group IV in qualitative inorganic analysis? (1) Fe3 + (2) Zn2 + (3) Co2 + (4) Ni2 +

Q49.Compound X undergoes following sequence of reactions to give the Lactone Y. (1) (2) (3) (4)

Q49.Which of the following metals can be extracted through alkali leaching technique? (1) Sn (2) Pb (3) Au (4) Cu JEE Main 2023 (08 Apr Shift 1) JEE Main Previous Year Paper

Q49.The correct representation in six membered pyranose form for the following sugar [X] is JEE Main 2023 (01 Feb Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q49.The statement/s which are true about antagonists from the following is/are: A. They bind to the receptor site. B. Get transferred inside the cell for their action. C. Inhibit the natural communication of the body. D. Mimic the natural messenger. Choose the correct answer from the options given below: (1) B only (2) A, C and D (3) A and C (4) A and B

Q49.Match List-I with List-II. List-I Polymer List-II Type/Class A. Nylon-2-Nylon-6 I. Thermosetting polymer B. Buna-N II. Biodegradable polymer C. Ureaformaldehyde resin III. Synthetic rubber D. Dacron IV. Polyester Choose the correct answer from the options given below: (1) A →IV; B →I; C →II; D →II (2) A →II; B →III; C →I; D →IV (3) A →IV; B →III; C →I; D →II (4) A →II; B →I; C →IV; D →III

Q49.Inert gases have positive electron gain enthalpy. Its correct order is (1) Xe < Kr < Ne < He (2) He < Ne < Kr < Xe (3) He < Xe < Kr < Ne (4) He < Kr < Xe < Ne JEE Main 2023 (25 Jan Shift 1) JEE Main Previous Year Paper

Q49.The metal which is extracted by oxidation and subsequent reduction from its ore is : (1) Al (2) Ag (3) Cu (4) Fe

Q49.Polymer used in orlon is: (1) Polyethene (2) Polycarbonate (3) Polyamide (4) Polyacrylonitrile

Q50.A solution of CrO5 in amyl alcohol has a....colour (1) Green (2) Orange-Red (3) Yellow (4) Blue